Automatic gate



Patented A110. 15, 1922.

3 SHEETS-SHEET T;

T. E.' HARRTNGTON. AUTOMATIC GATE. AFPLICATlOllVAFlLED JULY 26.1921. 1,426,062.

T. E. HARRINGTON.-

3 SHEETS-SHEET 2.

Patented Aug. 15,

T. E. HARRINGTON.

AUTOMATIC GATE. APPLICATION FLL'ED JULY 26.1921.

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THOMAS E. HARRINGTON, OF SILVER. C'FY, NW MEXICO. y

AUTOMATIC GATE;

Application filed July 26, 1921. Serial No. 487,730.

To all whom t may concern: y

Be it known that THOMAS E. EARRING- 'roN, a citizen of the United States, residing at Silver City, in the county of Grant and State of New Mexico, has invented certain new and useful Improvements in Automatic Gates, of which the following is a specification.

My invention relates to improvements in gates, having means actuated by a passing vehicle, to automatically swing the gate to the opened or closed position, or both.

An important object of the invention is to provide apparatus of the above mentioned character, whic-h is wholly automatic in operation, is set into action to open the gate upon the approach of the vehicle and to close it when the vehicle reaches the opposite side of the gate and its traveling away from the 0ate. b A further object of the invention is to provide means whereby the gate will loe swung to an open position in the direction of travel of the vehicle, irrespective of the position of the gate upon the approach of the vehicle upon either side thereof.

A further object of the invention is to provide apparatus of the above mentioned character, having means to securely lock the gate in the opened or closed position when shifted thereto.

A further obj ect of the inventon is to provide a gate of the above mentioned character, which is reliable in operation and not liable to derangements.

Other objects and advantages of the invention will be apparent during the Vcourse of the following description.

In the accompanying drawings forming a part of this specication and in which like numerals are employed to designate like Figure 1 is a perspective view of a gate embodying my invention, 4

Figure 2 is a horizontal sectional view taken on line 2-2 of Figure 1,

, Figure 3 is a plan view of one of the trip devices for actuating the O'ate, the gate being shown in horizontal sections,

Figure a is a 'fragmentary side elevation of the gate,

Figure 5 is a side elevation of the trip device,

Figure 6 is a side elevation of the rock shaft or trip element of the trip device,

Figure 7 is a fragmentary perspective v at its upper end in a plate 13. These plates are rigidly secured to a vertical stationary post 15, as shown. l

The end or bar 12, constituting the pivot of the gate is provided with a gear 16 preferably near its lower end, and rigidly sey cured thereto. mesh with a segmental gear 17, pivoted upon the post 15 and suitably held against vertical displacement. Rods 18 are pivotally connected with the segmental gear 17 and extends upon opposite sides of the gate, to trip devices A and B, arranged suitably remote from the gate, upon opposite sides thereof.

Each trip device embodies a rock shaft or trip element 19 having laterally extending or crank positions 20. The rock shaft 19 is pivotally connected at 21 with a road plate 22. i

This gear is in permanent Rigidly connectedwith one end of each y rock shaftl9 is a crank23, Figures 1, 6 and 7, and this crank extends above and below the rock shaft. A cable 24 is attached to the upper end of the crank 23, and is passed over a pulley 25, supported from a post 26. A weight 27 is secured to the free end of the cable 2e. This weight and the associated elements serve to normally retain the cranks 20, elevated andwill return the same to this elevated position when removed there from and released. n

The opposite endv of each rock shaft 19, Figure 1, 5, 6, is bent into an inner depending crank 28, provided at its outer end with a pivot portion 29. An outer: upstanding crank 30 is formed upon the pivot portion 29 and is provided at its upper end with a pvot portion 31. The crank 30 is longer than the crank 28 and is disposed at an angle y with relation thereto. As more clearly shown in Fig. 5, the pivot 29 of each crank 3G is spaced a short distance from the outer end wall of the slot 33, and this provides suitable play between the parts, so that when 7 one rod 18 ismoved longitudinally away from the gate, the other rod 18 which may move slightly in the same direction with the first named rod 18, will not turn its corre spending rock shaft 19.

A link 82 has a slotted portion 88, receiving the pivot portion 29. This link has its inner end provided with a swiveled connection 811 with a turn-buckle, having screwthreaded engagement with the outer end of the rod 18.

lt is obvious that the slack in the rod 18 and associated elements may be taken up by adjust-ing the turn-buckle 85. in upper angularly arranged link 86, is pivoted at 87, with the link 82, and is provided with a slotted portion 88, receiving the pivot portion 81 of the crank 80. The pivoted portion 81 is arranged within the outer end of the slot 88.

The numeral 89 designates a vertically swinging latch shifting levers one of which is arranged adjacent to each trip device.

This lever is4 pivoted at l-O upon a support- 41. A rigid link 89 is pivoted to the lever 89 above its pivot et() and is also pivoted upon the pivot element 29. This rigid link swings lever 89 when the link is moved in either direction.

The lever 89 has a laterally extending flange 4t2, provided with apertures e8, slidably receiving arms of a U-shaped pull Llei, the ends of the arms being bent laterally, forming stops or heads 15. The ltl-shaped pull 4&1, is connected with a rod 4G, connected with a latch 47. This latch is pivoted upon a post 18, to swing horizontally, and is moved to the closed position by spring e9. The function of the latch 47 is to engage the end 11 of the gate and to hold the same in the opened position until the trip device is actuated to close the gate.

The numeral 50 designates a pair of horizontally swinging latches having outer beveled faces 51. These latches are pivoted at 52 upon brackets 58 secured to a post lF11. The latches 50 are swung outwardly by springs 5st', and are shifted inwardly by links 55, secured thereto and to bellcrank levers 58, Figure 2. Attention is called to the fact that the bell-crank lever 56 upon one side of the gate 10 is connected with the latch 50 upon the opposite side of the gate. The bell-crank levers 58, are pivoted at 57 to swing horizontally and are connected at their outer ends with rods 58, which terminate in elongated loops or eyes 59, receiving a pin or bolt GO secured to the lower end of the crank 28. The pin 60 is in the outer end of the loop 59 when the crank 28 is vertical.

The operation of the gate is as follows:

The gate 10 may be closed, as in Figure 1,

and a vehicle, such as an automobile, ap-

proaching the gate from the left, passes over the trip device When the wheels of the vehicle contact with the cranks 20, the rock shaft 19 of the trip device A will be turned clock-wise. This will swing the inner depending crank 28 to the left and draw the rod 18 to the left, Figure 1. The segmental gear 17 will be swung to the left and the gear 17 turned to the right, whereby the gate 10 will be swung to the right to the open position. 1n order that the gate may be released for this swinging movement, when the rock-shaft 19 of trip device A is thus turned clock-wise, the pin 60 on the lower end of crank 28 is shifted to the left, and the latch 50 upon the right side ofthe end 11 of the gate is drawn inwardly to release the end 11. `When the gate is shifted to the outer position, it automatically engages behind latch 47, and contacts with the post 18. The gate is thus held open until the vehicle wheels engage the cranks 20V of the trip device B, whereby therock shaft 19 of this trip device is turned clockwise. This turning movement ofthe rock-- shaft 19 in trip device B shifts crank 28 to the left which is now idle in slot 88, while the pivot portion 81 of the crank 80 will en gage the end wall of the slot 88, and shift the link 88 to the right, Figure 5. The rod 18 of the gate 10 is thus shifted to the right and the segmental gear 17 turned clockwise and the gear 16 counter clock-wise and the gate 10 closed, the end 11 engaging between the latches 50. 1n order that the latch 17 may release the gate 10, to permit 100 its closing, when the rock shaft 19 of trip device B was turned clock-wise, the crank 28 pushed the link 89 to the left, swinging the lever 89 upon its pivot, and moving its lower end to the right. The upper arm of the U-shaped pull device la will slide in the aperture 18, and the lower arm is pulled to the right and the rod l18 is pulled to the right, and latch 417 :shifted outwardly. Particular attention is called to the fact that the lever 89 is connected with the rock-shaft 19 so that it is swung upon its pivot when the rock-shaft is turned in either direction, and the tl-shaped pull is so associated with the lever that the latch L17 is opened when 115 the lever 89 is swung in either direction. This isimportant as it permits of the gate being released, irrespective of the position it may occupy. Thus, the gate might be left locked in the open position to the right, Figure 1, and an automobile might be approaching the gate from the right over the trip device B. Vilhen the rock-shaft 19 is so turned counter clock-wise, the latch e7 upon the right side of the gate will release the gate, and the gate would be shifted to the closed position and then to the open position upon the left side ofthe gate opening. The gate would then close when the vehicle passed over the trip device A upon the left side of the gate. The weights 27 return the cranks 2O and associated elements to the normal position.

It is to be understood that the form of my invention herewith shown and described is tothe taken as a preferred embodiment of the same and that various changes in t-he shape, size, and arrangements of parts, may be resorted to without depart-ing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. rlhe combination with a horizontally swinging gate, of a trip device arranged upon each side of the gate, said trip device embodying a pair of cranks, a pair of slotted links connected with the cranks so that one crank is adapted to move its link in one direction, and the other `crank adapted to move its link in one direction, operative connecting means between each pair of links and the gate to swing the gate, latch means to normally lock the gate in the closed position and connected with the trip device, and latch means to lock the gate in the open positionA and connected with the trip device.

2. The combination with a horizontally swinging gate, of trip devices upon opposite sides thereof, each trip device embodying a pivoted element having a pair of oppositely extending cranks provided with pivot portions, a slotted link receiving the pivot portion of one crank, a second slotted link receiving the pivot portion of the other crank, means to turn the gate, means connecting the slotted links withl the turning means, latch means for normally locking the gate in the closed position, connecting means between the latch means and t-he trip devices, and means to hold the gate in the open position when swung thereto.

3. The combination with a horizontally swinging gate, of trip devices arranged upon opposite sides thereof, each trip device embodying a transverse rock shaft having an upwardly extending element to be depressed by a vehicle, a crank connected with one end of the rock shaft and extending above and below the same, weight means connected with the inner end of the crank and serving to normally hold the rock shaft in one position, a pair of oppositely extending cranks formed upon the opposite end of the rockshaft and having pivot portions, a slotted link receiving one pivot portion a second slotted link receiving the other pivot portion, means to swing the gate horizontally, connecting means between the swinging means and the slotted links, latch means to normally lock the gate in the closed position, connecting means between the latch means and the lower ends of the iirst named cranks and means for holding the gate in the open position when shifted thereto. r

4. The combination with a horizontally swinging gate, of a gear secured thereto, a co-acting pivoted gear engaging the first named gea-r, a pair of connected oppositely extending cranks having pivot portions, a slotted link receiving one pivot portion, a second slotted link receiving the other pivot portion, and connecting means between the v opposite sides thereof, each trip device embodying a rock shaft having a normallyupstanding crank, means for normally retaining the crank in the upstanding position, a pair of oppositely extending cranks connected with the rock shaft and having pivot portions, a pair of connected links having slots to receive said pivot portions, means to swing the gate horizontally, connecting means between the swinging means and the slotted links, a .latch to hold the gatek in the open position, a pivoted lever having a pair of apertures, arms slidable within the apertures and having stops, connecting means between the arms and the latch, a link connected with the lever and with one pivot portion, latch means to normally hold thev gate'in the closed position, and connecting means between the latch means and the trip devices.

7. In a gate operating device, as a subcombination, a latch and pivoted lever having a pair of apertures, a. pair of arms slidable in the apertures and having stops, connecting means between the arms and latch, and means to swing the lever.

8. In a gate operating device, the com bination with a swinging gate, means to turn the gate, a pair of links pivotally connected and connected with the turning means, said links having longitudinal slots, a pair of cranks extending in opposite directions and having pivot portions inserted within the slots of the links, and means to turn the cranks.

THOMAS E. HARRINGTON. 

